Estimation (Intro) Worksheets

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Browse all 12 printable worksheets below — click any card to open the full page.

Easy

Estimation (Intro)

Name:

Date:

Grade: Grade 2

Part A: Sort the Words

Sort each word or number into the correct category box.

Part B: Fill in the Blank

Write the missing word or number on each line.

1. Round 34 to the nearest 10:  

2. Round 56 to the nearest 10:  

3. Round 72 to the nearest 10:  

4. Round 48 to the nearest 10:  

5. Round 21 to the nearest 10:  

Part C: True or False?

Read each statement. Circle True or False.

1. The number 37 rounds to 40.

T F

2. The number 62 rounds to 70.

T F

3. The number 83 rounds to 80.

T F

4. The number 19 rounds to 10.

T F

Estimation

Easy

Estimation (Intro)

Name:

Date:

Grade: Grade 2

Part A: Sort the Words

Sort each word or number into the correct category box.

Part B: Fill in the Blank

Write the missing word or number on each line.

1. Round 15 to the nearest 10:  

2. Round 25 to the nearest 10:  

3. Round 45 to the nearest 10:  

4. Round 65 to the nearest 10:  

5. Round 85 to the nearest 10:  

Part C: True or False?

Read each statement. Circle True or False.

1. The number 25 rounds to 20.

T F

2. The number 35 rounds to 40.

T F

3. The number 75 rounds to 70.

T F

4. The number 55 rounds to 60.

T F

Estimation

Easy

Estimation (Intro)

Name:

Date:

Grade: Grade 2

Part A: Sort the Words

Sort each word or number into the correct category box.

Part B: Fill in the Blank

Write the missing word or number on each line.

1. When you round 23 to the nearest 10 you get  

2. 47 rounded to the nearest 10 is  

3. The rounded ten 20 is  

4. The rounded ten 70 is greater than  

5. 55 rounds up to the nearest ten of  

Part C: True or False?

Read each statement. Circle True or False.

1. 31 rounds to 30 and 30 is under 50.

T F

2. 68 rounds to 70 and 70 is under 50.

T F

3. 12 rounds to 10 and 10 is under 50.

T F

4. All numbers that round to 50 or more are small numbers.

T F

Estimation

Easy

Estimation (Intro)

Name:

Date:

Grade: Grade 2

Part A: Sort the Words

Sort each word or number into the correct category box.

Part B: Fill in the Blank

Write the missing word or number on each line.

1. 150 rounds up to the nearest hundred of  

2. 270 rounds to the nearest hundred of  

3. 340 rounds to the nearest hundred of  

4. 520 rounds to the nearest hundred of  

5. 480 rounds to the nearest hundred of  

Part C: True or False?

Read each statement. Circle True or False.

1. 210 rounds to 200 because the tens digit is 1.

T F

2. 150 rounds down to 100 because 5 rounds down.

T F

3. 340 is closer to 300 than to 400.

T F

4. 520 and 480 both round to the same hundred.

T F

Estimation

Medium

Estimation (Intro)

Name:

Date:

Grade: Grade 2

Part A: Fill in the Blank

Write the missing word or number on each line.

1. Round 38 to the nearest 10:  

2. Round 71 to the nearest 10:  

3. Estimate 28 + 41 by rounding first:  

4. Estimate 52 + 19 by rounding first:  

5. Estimate 63 - 21 by rounding first:  

6. Estimate 47 + 32 by rounding first:  

7. Estimate 88 - 39 by rounding first:  

8. Round 54 to the nearest 10:  

9. Round 46 to the nearest 10:  

Part B: Matching

Match each item on the left to the correct answer on the right.

1. Match each item to its correct answer.

23

→

20

27

→

30

41

→

40

48

→

50

Estimation

Medium

Estimation (Intro)

Name:

Date:

Grade: Grade 2

Part A: Fill in the Blank

Write the missing word or number on each line.

1. Round 76 to the nearest 10:  

2. Round 93 to the nearest 10:  

3. Round 89 to the nearest 10:  

4. Estimate 34 + 58 by rounding first:  

5. Estimate 77 - 42 by rounding first:  

6. Round 99 to the nearest 10:  

7. Estimate 61 + 28 by rounding first:  

8. Round 82 to the nearest 10:  

9. Estimate 95 - 31 by rounding first:  

Part B: Matching

Match each item on the left to the correct answer on the right.

1. Match each item to its correct answer.

62

→

60

68

→

70

81

→

80

86

→

90

Estimation

Medium

Estimation (Intro)

Name:

Date:

Grade: Grade 2

Part A: Fill in the Blank

Write the missing word or number on each line.

1. For 312 + 254, the front-end estimate uses 300 +  

2. Front-end estimate of 312 + 254 is  

3. For 428 + 331, keep 400 and  

4. Front-end estimate of 428 + 331 equals  

5. For 615 + 172, front-end uses 600 plus  

6. Front-end estimate of 615 + 172 is  

7. For 583 - 241, the front-end estimate is 500 -  

8. Front-end estimate of 583 - 241 is  

9. Front-end estimation is  

Part B: Matching

Match each item on the left to the correct answer on the right.

1. Match each item to its correct answer.

312 + 254 front-end

→

500

428 + 331 front-end

→

700

615 + 172 front-end

→

700 again

583 - 241 front-end

→

300

Estimation

Medium

Estimation (Intro)

Name:

Date:

Grade: Grade 2

Part A: Fill in the Blank

Write the missing word or number on each line.

1. Estimate of 48 + 32 is 80. Exact is 80. This is  

2. Estimate of 29 + 41 is 70. Exact is 70, so the exact is  

3. Estimate of 63 - 18 is 40. Exact is 45. The exact is  

4. Estimate of 52 + 37 is 90. Exact is 89. Difference from estimate is  

5. If an estimate is 60 but the exact is 130, the exact is  

6. Close estimates help us catch  

7. Estimate of 71 - 29 is 40. Exact 42 is  

8. When the exact answer is very far from the estimate, we should  

9. An estimate close to the exact means the exact is  

Part B: Matching

Match each item on the left to the correct answer on the right.

1. Match each item to its correct answer.

Est 80, exact 80

→

Exact matches estimate

Est 40, exact 45

→

Close, off by 5

Est 90, exact 89

→

Very close, off by 1

Est 60, exact 130

→

Far, check work

Estimation

Hard

Estimation (Intro)

Name:

Date:

Grade: Grade 2

Part A: Multiple Choice

Circle the best answer for each question.

1. Which number rounds to 50?

2. Which number rounds to 30?

3. Which number rounds to 80?

4. Which number does NOT round to 40?

Part B: Fill in the Blank

Write the correct answer on each line.

1. Round 58 to the nearest 10:  

2. Round 31 to the nearest 10:  

3. Estimate 44 + 37 by rounding first:  

4. Estimate 82 - 48 by rounding first:  

5. Estimate 29 + 62 by rounding first:  

Estimation

Hard

Estimation (Intro)

Name:

Date:

Grade: Grade 2

Part A: Multiple Choice

Circle the best answer for each question.

1. Sam has 28 marbles and Ben has 42. About how many marbles do they have in all?

2. Lily read 19 pages on Monday and 31 on Tuesday. About how many pages did she read?

3. A jar had 61 candies. The class ate 38. About how many candies are left?

4. The store sold 47 apples in the morning and 23 in the afternoon. About how many apples were sold in all?

Part B: Fill in the Blank

Write the correct answer on each line.

1. Nora baked 39 muffins and Kai baked 22. Estimate the total:  

2. A zoo had 78 birds. 29 flew away. Estimate how many are left:  

3. Max has 53 stickers and gets 18 more. Estimate his total:  

4. There were 86 seats. 41 are taken. Estimate empty seats:  

5. Zoe has 32 red beads and 57 blue beads. Estimate the total:  

Estimation

Hard

Estimation (Intro)

Name:

Date:

Grade: Grade 2

Part A: Multiple Choice

Circle the best answer for each question.

1. A class has 28 red crayons and 33 blue crayons. About how many crayons in all?

2. Maya read 47 pages Monday and 52 pages Tuesday. Her total was 99. Is that reasonable?

3. A farm has 61 hens and 18 ducks. Which estimate of the total birds is best?

4. Leo had 82 stickers and gave away 39. He said he has 43 left. Is that reasonable?

Part B: Fill in the Blank

Write the correct answer on each line.

1. If 28 + 33 rounds to 30 + 30, the estimate is  

2. Rounded estimate of 47 + 52 is 50 + 50 =  

3. Rounded estimate of 61 + 18 is 60 + 20 =  

4. Rounded estimate of 82 - 39 is 80 - 40 =  

5. Estimation helps you quickly check if an answer is  

Estimation

Hard

Estimation (Intro)

Name:

Date:

Grade: Grade 2

Part A: Multiple Choice

Circle the best answer for each question.

1. Sam has $18 and buys a $7 book. About how much is left?

2. Mia has $32. She buys a $19 toy. Estimate how much she has left.

3. Jon buys snacks for $14 and $27. About how much did he spend total?

4. Kim has $48. She says she can spend $52 today. Is that reasonable?

Part B: Fill in the Blank

Write the correct answer on each line.

1. Sam: $18 - $7 rounds to $20 - $10 = $ 

2. Mia: $32 - $19 rounds to $30 - $20 = $ 

3. Jon: $14 + $27 rounds to $10 + $30 = $ 

4. An estimate in money helps decide if you have  

5. If estimate says $10 left but exact is $11, the exact is  

Estimation

What's Included in This Download

What You'll Learn

These estimation (intro) worksheets help grade 2 students develop essential math skills through engaging activities.

How to Use These Worksheets

1. Download & Print: Click the download button to get the PDF. Print on standard 8.5" x 11" paper.
2. Start Simple: Begin with easier pages before moving to more challenging activities.
3. Daily Practice: Dedicate 10-15 minutes each day for consistent learning.
4. Use Manipulatives: Pair worksheets with physical objects like blocks or counters.
5. Provide Encouragement: Celebrate progress and effort to build confidence.
6. Check Progress: Use the included answer key to review work together.

Common Mistakes to Watch For

• Rounding 25 down to 20. Numbers that end in 5 always round up, so 25 rounds to 30, not 20.
• Forgetting to look only at the ones digit. Some students look at the tens digit and get confused. The ones digit decides the rounding.
• Adding the exact numbers instead of the rounded numbers. To estimate 28 + 41, round first to 30 + 40, then add to get 70.

Frequently Asked Questions

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